Viessmann EM-P1 - Control and Communication; Rotary Switch S1 Setting; Connecting PlusBus

7
Rotary switch S1 must be set to 1 (fac-
tory setting).
Connecting the PlusBus to the heat generator control unit
B
74
1 2
A
jF jF
[{][{][{]
DI1 DI2 DI3
1
2
3
4
1
2
3
4
5
6
A
Extension
B
PlusBus to heat generator
Note
If making the connection to the heat
generator with an external plug for the
bus connection, disconnect plug
jF
and connect the wires directly.
Heat generator installation and
service instructions
Rotary switch S1
5831394